condition mean min max ZT0-3 0.01695985 0.01695985 0.01695985 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0215646 0.0215646 0.0215646 ZT12-15 0.0098325 0.0098325 0.0098325 ZT16-19 0.01718815 0.01718815 0.01718815 ZT20-23 0.03845718 0.03845718 0.03845718